It's based on pharmacokinetic theory and community experience, not controlled studies
Contrasting effects of Lixisenatide and Liraglutide on postprandial glycemic control, gastric emptying, and safety parameters in patients with type 2 diabetes on optimized insulin glargine with or without metformin: a randomized, open-label trial
McCrindle BW, Rowley AH, Newburger JW, Burns JC, Bolger AF, Gewitz M, Baker AL, Jackson MA, Takahashi M, Shah PB, Kobayashi T, Wu MH, Saji TT, Pahl E., American Heart Association Rheumatic Fever, Endocarditis, and Kawasaki Disease Committee of the Council on Cardiovascular Disease in the Young
Lipotropic Injections (Lipo Shots) Do They Really Help Weight Loss
The DAC version binds to albumin in the bloodstream, prolonging its half life so that GH levels remain elevated for several days